PYRALIDIDyE. 23 



Generally common on grassy banks in Slay, July, 

 and August. 



The larva feeds in May and September on calamint 

 and various speeies of Mentha, under a web. Larva : 

 back dull green ; dorsal stripe of the same colour edged 

 with yellow; spiracular stripe broad and yellowish ; head 

 and second segment pale brown, freckled with black ; 

 below the spiracles is a double greenish line ; ventral 

 surface pale yellow, dots shining black, ringed with 

 yellow. 



A uniform green variety occurs ; also a variety -with 

 a yellow blotch on the back of the twelfth and thir- 

 teenth segments. E. M. M. xi. 66. 



Pyrausta purpuralis, L. 



(Plate 2. fig. 13.) 



Loc. Scotland (widely distributed?), ArranjWotton, 

 Brocklcy, Lcdsham, Ysceifiog, Rugby, Marlborough, 

 Plymouth, Aldeby, Ketteringham, Booton, Horsford, 

 Pembroke, Ireland, Hastings, Suffolk, Iluddersfield, 

 Bramham, Sheffield, Colchester, Colwyn. 



Usually common on railway-banks, slopes, &c., in 

 May and July. 



The larva feeds on Mentha arvensis and aqiiatica in 

 June and August. Head bi'owu ; grouud-colour grey, 

 with black spots, surrounded by white ; dorsal and 

 subdorsal stripes yellow. 



A variety of the larva occurs of a uniform dark 

 brown. 



